{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45186 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-45186 is a low-severity denial of service vulnerability in Libexpat Project Libexpat, published on 10 May 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-45186 and fix it if it is affected.\n\nWhat it is: CVE-2026-45186 is a low-severity denial of service vulnerability in Libexpat Project Libexpat, published on 10 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-45186 in the wild and no public exploit code.\n\nAffected product: Libexpat Project Libexpat. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-45186/ (Markdown: https://insights.sbomify.com/CVE-2026-45186/index.md)","id":"CVE-2026-45186","markdown":"https://insights.sbomify.com/CVE-2026-45186/index.md","name":"CVE-2026-45186","record":{"aliases":["ALPINE-CVE-2026-45186","ALSA-2026:22715","ALSA-2026:22721","ALSA-2026:23230","ALSA-2026:90895","AZL-86340","BELL-CVE-2026-45186","CLEANSTART-2026-HO43212","CLSA-2026-1779122132","CLSA-2026-1779129222","CLSA-2026-1779129362","CLSA-2026-1779130424","CLSA-2026-1779183482","CLSA-2026-1779183767","CLSA-2026-1779183996","CLSA-2026-1779184141","CLSA-2026-1779358911","CLSA-2026-1779358954","CLSA-2026-1779359157","CLSA-2026-1779359397","CLSA-2026-1779359429","CLSA-2026-1779361284","DEBIAN-CVE-2026-45186","ECHO-0089-929b-f00d","GHSA-r396-2q2c-pjhr","JLSEC-2026-1223","MGASA-2026-0204","OESA-2026-2430","OESA-2026-2431","OESA-2026-2432","OESA-2026-2433","OESA-2026-2500","RHSA-2026:22715","RHSA-2026:22721","RHSA-2026:23230","RHSA-2026:77236","RLSA-2026:22715","RLSA-2026:22721","RLSA-2026:23230","RLSA-2026:90895","ROOT-OS-DEBIAN-11-CVE-2026-45186","UBUNTU-CVE-2026-45186"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"XML parsing library","requires_auth":"none","summary":"Attackers can cause denial of service in applications using libexpat by sending crafted XML input that triggers excessive computational complexity.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"libexpat","vendor":"libexpat_project"}],"cvss":{"score":2.9,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"}],"description":"In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::baseos","Red Hat:hummingbird:1","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Denial of service in libexpat","id":"CVE-2026-45186","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"libexpat_project:libexpat","products":["libexpat_project:libexpat"],"type":"denial_of_service","year":"2026"},"n_packages":28,"n_references":1,"next":{"headline":"Apache OFBiz: Improper Authorization in Scheduled Job Creation Allows Low-Privileged Users to Submit System Jobs","id":"CVE-2026-45187"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/almalinux/expat","source":"ALSA-2026:22715"},{"ecosystem":"AlmaLinux:10","fixed":["2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/almalinux/expat-devel","source":"ALSA-2026:22715"},{"ecosystem":"AlmaLinux:10","fixed":["153.5.0-1.el10_2.alma.1"],"introduced":["0"],"last_affected":[],"package":"thunderbird","purl":"pkg:rpm/almalinux/thunderbird","source":"ALSA-2026:90895"},{"ecosystem":"AlmaLinux:8","fixed":["2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/almalinux/expat","source":"ALSA-2026:22721"},{"ecosystem":"AlmaLinux:8","fixed":["2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/almalinux/expat-devel","source":"ALSA-2026:22721"},{"ecosystem":"AlmaLinux:9","fixed":["2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/almalinux/expat","source":"ALSA-2026:23230"},{"ecosystem":"AlmaLinux:9","fixed":["2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/almalinux/expat-devel","source":"ALSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/redhat/expat","source":"RHSA-2026:22715"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat-debuginfo","purl":"pkg:rpm/redhat/expat-debuginfo","source":"RHSA-2026:22715"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat-debugsource","purl":"pkg:rpm/redhat/expat-debugsource","source":"RHSA-2026:22715"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/redhat/expat-devel","source":"RHSA-2026:22715"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/redhat/expat","source":"RHSA-2026:22721"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat-debuginfo","purl":"pkg:rpm/redhat/expat-debuginfo","source":"RHSA-2026:22721"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat-debugsource","purl":"pkg:rpm/redhat/expat-debugsource","source":"RHSA-2026:22721"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/redhat/expat-devel","source":"RHSA-2026:22721"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-debuginfo","purl":"pkg:rpm/redhat/expat-debuginfo","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-debugsource","purl":"pkg:rpm/redhat/expat-debugsource","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/redhat/expat-devel","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/redhat/expat","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-debuginfo","purl":"pkg:rpm/redhat/expat-debuginfo","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat-debugsource","purl":"pkg:rpm/redhat/expat-debugsource","source":"RHSA-2026:23230"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.8.5-1.1.hum1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/redhat/expat","source":"RHSA-2026:77236"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.8.5-1.1.hum1"],"introduced":["0"],"last_affected":[],"package":"expat-devel","purl":"pkg:rpm/redhat/expat-devel","source":"RHSA-2026:77236"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.8.5-1.1.hum1"],"introduced":["0"],"last_affected":[],"package":"expat-static","purl":"pkg:rpm/redhat/expat-static","source":"RHSA-2026:77236"},{"ecosystem":"Rocky Linux:10","fixed":["0:2.7.3-1.el10_2.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/rocky-linux/expat?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:22715"},{"ecosystem":"Rocky Linux:10","fixed":["0:153.5.0-1.el10_2"],"introduced":["0"],"last_affected":[],"package":"thunderbird","purl":"pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:90895"},{"ecosystem":"Rocky Linux:8","fixed":["0:2.5.0-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/rocky-linux/expat?distro=rocky-linux-8\u0026epoch=0","source":"RLSA-2026:22721"},{"ecosystem":"Rocky Linux:9","fixed":["0:2.5.0-6.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"expat","purl":"pkg:rpm/rocky-linux/expat?distro=rocky-linux-9\u0026epoch=0","source":"RLSA-2026:23230"}],"prev":{"headline":"Use after free in Exim","id":"CVE-2026-45185"},"products":["libexpat"],"published":"2026-05-10","related":[{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2024-45490","kev_date_added":null,"published":"2024-08-30"},{"cvss_score":8.7,"headline":"Expat Denial of Service via storeAtts() Quadratic Complexity","id":"CVE-2026-66046","kev_date_added":null,"published":"2026-08-18"},{"cvss_score":8.1,"headline":"Integer overflow in n/a","id":"CVE-2021-46143","kev_date_added":null,"published":"2022-01-06"},{"cvss_score":7.8,"headline":"Privilege escalation in n/a","id":"CVE-2017-11742","kev_date_added":null,"published":"2017-07-30"},{"cvss_score":7.5,"headline":"Denial of service in libexpat","id":"CVE-2025-59375","kev_date_added":null,"published":"2025-09-15"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-52425","kev_date_added":null,"published":"2024-02-04"},{"cvss_score":7.3,"headline":"Integer overflow in n/a","id":"CVE-2024-45491","kev_date_added":null,"published":"2024-08-30"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["libexpat project"]},"summary":"Attackers can cause denial of service in applications using libexpat by sending crafted XML input that triggers excessive computational complexity.","url":"https://insights.sbomify.com/CVE-2026-45186/"}